William Olson, M.D.
NPI 1518239433 · Family Medicine Physician · Concord, CA
William Olson, M.D. is a Family Medicine Physician provider in Concord, CA (NPI 1518239433).
Provider details
- NPI number
- 1518239433
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G37032 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-02-08
- Last updated
- 2012-02-08
Frequently asked questions
- What is William Olson's NPI number?
- William Olson's National Provider Identifier (NPI) is 1518239433, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Olson's specialty?
- William Olson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Olson located?
- William Olson's practice location on file with NPPES is 2300 Clayton Rd, Concord, CA 94520-2100.
- What is William Olson's phone number?
- The practice phone number listed in the NPPES registry for William Olson is (925) 980-1937.
- Is William Olson's NPI active?
- Yes — William Olson's NPI (1518239433) is active in the NPPES registry as of the last update on 2012-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.